Brush



FIG. 1 is a front elevation of a brush showing my design (a rear elevation thereof is in a mirror-image relationship with the front elevation);

FIG. 2 is a left side elevation thereof (a right side elevation thereof is in a mirror-image relationship with the left side elevation);

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a perspective view thereof. 

The ornamental design for a brush, as shown and described. 